Plans revealed for Colosseum amphitheatre's retractable floor

The Italian government has approved plans designed by engineering firm Milan Ingegneria to create a remote-controlled, retractable floor within the Colosseum arena in Rome.
The retractable floor will replace the arena's original floor, which was removed in the 19th century to restore the vision of "ancient times".
"Realisation of the arena resumes the thread of time, finally restoring to the public the same vision that was had in ancient times from the stage of the monument, restoring its i